Pork Tenderloin without meat

3 -4 lbs pork tenderloin 1 tablespoon ground allspice 3 tablespoons cracked black pepper 1 teaspoon salt 2 tablespoons oil 1 tablespoon butter 1 large onion 1[...]

3/4 cup dark brown sugar , packed 1/3 cup apple cider vinegar 2 tablespoons water 1 tablespoon peeled gingerroot , grated 1 1/2 teaspoons lemon zest , grated[...]

4 tablespoons clarified butter or 4 tablespoons vegetable oil 2 lbs pork tenderloin, trimmed of fat salt & freshly ground black pepper, to taste 3 tablespoons[...]